How does a key lock?

Question

When the right key slides into a pin-and-tumbler lock, the pointed teeth and notches on the blade of the key allow the spring-loaded pins to move up and down until they line up with a track called the shear line. When the pins align with the shear line, the cylinder can turn and the lock will open.

How does a keyed door lock work?

On locking the door, key locks work by turning the cylinder. Once the cylinder is turned, it releases the spring to push the latch in a closed position. What is this? The right key is also used to trigger the inside door lock mechanism to unlock the door.

What way does a key turn in a lock?

Locks built in to the doorknob usually open clockwise. Desk and filing cabinet locks also tend to open clockwise. When you encounter a new kind of lock mechanism, try turning the plug in both directions.

How does a flat key lock work?

A flat key is used to open a pin tumbler lock. The pin tumbler lock is made with an outer casing and a cylindrical plug in the middle. This plug needs to rotate for the lock to be open. A flat key is required to rotate the plug and open the lock in the process.

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